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Free Shipping to all UK customers for orders over £25.00
Free Shipping to all UK customers for orders over £25.00
Usually dispatched within 3 - 5 business days.
£ 6.59
Test your powers of logic with these challenging Su Doku puzzles. This fifth and toughest addition to the successful Times Killer Su Doku series will test your skills to the limit, adding the challenge of arithmetic and taking Su Doku to a new and even deadlier level of difficulty.